CVE catalog
CVE-2024-27305
python-aiosmtpd: CVE-2024-27305
- Severity
- Medium · CVSS 5.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.37% · Oct 25, 2026
aiosmtpd is a reimplementation of the Python stdlib smtpd.py based on asyncio. aiosmtpd is vulnerable to inbound SMTP smuggling. SMTP smuggling is a novel vulnerability based on not so novel interpretation differences of the SMTP protocol. By exploiting SMTP smuggling, an attacker may send smuggle/spoof e-mails with fake sender addresses, allowing advanced phishing attacks. This issue is also existed in other SMTP software like Postfix. With the right SMTP server constellation, an attacker can send spoofed e-mails to inbound/receiving aiosmtpd instances. This issue has been addressed in version 1.4.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | python-aiosmtpd | sid | 1.4.6-7 | fixed |
| Debian | python-aiosmtpd | forky | 1.4.6-7 | fixed |
| Debian | python-aiosmtpd | trixie | 1.4.6-5 | fixed |
| Debian | python-aiosmtpd | bookworm | 1.4.3-1.1+deb12u1 | fixed |
| Opensuse | python-aiosmtpd | tumbleweed | 1.4.6-6.1 | fixed |
| Suse | python-aiosmtpd | package hub 15 sp5 | 1.2.1-bp155.3.3.1 | fixed |
| Opensuse | python-aiosmtpd | leap 15.5 | 1.2.1-bp155.3.3.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | python-aiosmtpd | source | sid | 1.4.6-1 | not yet assigned | Not reported | [1066820] |
| Debian | python-aiosmtpd | source | forky | 1.4.6-1 | not yet assigned | Not reported | [1066820] |
| Debian | python-aiosmtpd | source | trixie | 1.4.6-1 | not yet assigned | Not reported | [1066820] |
| Debian | python-aiosmtpd | source | bookworm | 1.4.3-1.1+deb12u1 | not yet assigned | Not reported | [1066820] |
| Opensuse | python-aiosmtpd | rpm | tumbleweed | 1.4.6-6.1 | Not reported | OPENSUSE-SU-2026:11675-1 | Not reported |
| Suse | python-aiosmtpd | rpm | package hub 15 sp5 | 1.2.1-bp155.3.3.1 | Not reported | OPENSUSE-SU-2024:0243-1 | Not reported |
| Opensuse | python-aiosmtpd | rpm | leap 15.5 | 1.2.1-bp155.3.3.1 | Not reported | OPENSUSE-SU-2024:0243-1 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2026_11675-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2024-27305]
- [https://osv.dev/vulnerability/openSUSE-SU-2024:0243-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2026:11675-1]
- [https://security-tracker.debian.org/tracker/CVE-2024-27305]
- [https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-27305.json]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]